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Mac: Due to driver-imposed point sprite size limits, do not use point sprite stars on ATI RV3xx renderers.

ver1_5_1
Da Woon Jung 2008-01-19 22:31:13 +00:00
parent 4439a6e333
commit 48d4d8a8ac
1 changed files with 15 additions and 0 deletions
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15
src/celengine/render.cpp
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@ -779,6 +779,21 @@ bool Renderer::init(GLContext* _context,
// we set the useRescaleNormal flag.
useRescaleNormal = true;
}
#ifdef TARGET_OS_MAC
if (strstr(glRenderer, "Radeon 9600") != NULL ||
strstr(glRenderer, "Radeon 9700") != NULL ||
strstr(glRenderer, "Radeon 9800") != NULL ||
strstr(glRenderer, "Radeon X600") != NULL)
{
// ATI RV3xx drivers on the Mac appear to limit point sprite size.
// This causes an abrupt size transition when going from billboards
// to sprites. Rather than incur overhead accounting for the size limit,
// do not use sprites on these renderers.
// Affected cards: 9550-9800, X300, X600, X1050 etc
// Renderer strings are not unique and only 4 should cover all cases
usePointSprite = false;
}
#endif
}
// More ugly hacks; according to Matt Craighead at NVIDIA, an NVIDIA